亶

Its parts

• 亠 tóu lid = 丶 + 一
• 回 huí to go back; to return = 囗 + 口
• 旦 dàn dawn; daybreak = 日 + 一 sound

Other characters with 旦 as their sound:

但 dàn量 liáng担 dān胆 dǎn坦 tǎn钽 tǎn袒 tǎn疍 Dàn

Dictionaries file it under 亠.

In other characters

Gives the sound in

澶 chán颤 chàn擅 shàn勯 dān檀 tán膻 shān嬗 shàn邅 zhān皽 zhāo鳣 zhān儃 chán蟺 shàn襢 tǎn鹯 zhān𫗴 zhān

Also in

璮 tǎn驙 zhān